Harnessing Visible Light: Unraveling the Photocatalytic Water Splitting Activity of Ir-TiO₂.

ABSTRACT: The quest to enhance the photocatalytic properties of TiO₂ for hydrogen evolution in the visible region has necessitated its modification through various strategies. In this study, a one-pot solvothermally synthesized iridium-decorated titanium dioxide (Ir-TiO₂) exhibits enhanced photochemical properties for splitting water in visible light. By varying the amount of Ir precursors, Ir-doped TiO₂ and IrO₂ composites with TiO₂ were formed. Density functional theory (DFT) calculations reveal that Ir has localized d and f orbitals and that its oxide exhibits metallic character. When Ir replaces Ti as the dopant, energy levels appear near the Fermi level. At lower Ir concentrations, Ti still dominates, and Ti 3d hybridizes with Ir 5d, while

SUBMITTER: Ashie MD 

PROVIDER: S-EPMC12421512 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature